Hi onenumber - You're right, there are lots of combo that you can pull out of ALL those vtracs. First off, one of the things I look for is a trigger, i.e., a triple vtrac. Once I see one, then I look at the strings between the trigger and the last triple vtrac that fell, to see if there are any prevailing strings, but mostly looking for the triple return (could be double/double returns as well). I follow triple vtracs for a lot of states and have backtested them over the past year... I see which states have the most success rate of repeating a triple, and in what combination to follow. I catagorize them into 4 groups:
1 - Bust (does not produce a triple vtrac after 5-7 draws) This varies from state to state and the skip count does as well. So one state would be considered a bust if gone out only 5 draws, while others only kick in after 5 draws....by following the patterns of each state, you determine when to start or stop betting.
2- Hit with triple return - Now this return comes as a triple digit from one of the last triples drawn. For example, say v5553 came out. A hit with triple return would be either a 555x or 333x. I usually discount the quads (5555, 3333) unless the stacks indicate otherwise.
3 -Hit with single return - Now this return comes as a single digit from one of the last triples drawn. For example, say v5553 came out. A hit with single return would be either a 5xxx or 3xxx.
4 - Miss - This is different from a bust. A miss is when a triple falls without one of the numbers from the trigger. For example, say 5553 came out. A miss would be a triple without a 5 or 3 in it (ex. v2224).
I use these rules along with the stacks to help me filter out which triple vtrac strings to play. Hope this helps.....good luck to you!